Michelle Obama on book tour encourages girls at London school

LONDON, United Kingdom (AFP) Michelle Obama on Monday returned to a London school she had visited as US first lady encouraging students to practice sisterhood as she presented a new memoir of her life. Obama is in the British capital to promote her hotly anticipated book, Becoming , which has already sold more copies than any other book published in the United States this year. She told some 300 students mostly girls aged between [ ]